MSI Mode GPU Configurator

PCIe Interrupt Workbench
Device & Interrupt Configuration PCIe Gen4
MSI Mode (MSISupported) Direct PCIe DMA packet messaging
Windows IRQ Reality Check: Modern GPUs support Message Signaled Interrupts (MSI-X). When left in legacy line-based mode, the GPU must assert physical pin IRQs which are often shared with USB/Audio controllers, causing DPC spikes and micro-stuttering.
Live Interrupt Routing & DPC Latency Oscilloscope Line-Based (SHARED IRQ)
Routing Mode Line-Based IRQ
DPC Latency 2.84 ms
CPU Overhead 14.2%
IRQ Throughput 38.4k /s
Moderate (Potential IRQ Sharing Bottleneck)
Enable MSI Mode with High Priority to reduce DPC latency.
Windows Registry Script (.reg export) Safe rollback supported 
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\PCI\VEN_10DE&DEV_2704...\Device Parameters\Interrupt Management\MessageSignaledInterruptProperties]
"MSISupported"=dword:00000000
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